syenite gabbro 中文意思是什麼
syenite gabbro
解釋
正長輝長巖-
Geochronological, geochemical and sr - nd isotopic data are reported for the alkaline igneous rocks ( syenites and zhaibei aluminous a - type granite ) and chebu gabbro in southern jiangxi province. shrimp zircon u - pb dating results indicate that the quannan syenite, zhaibei a - type granite and chebu gabbro formed during the early yanshanian period
對贛南燕山早期的富堿火成巖（正長巖和寨背鋁質a型花崗巖）和車步輝長巖進行了詳細的年代學、元素和sr - nd地球化學研究。
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